Year	base year varies by country
1960	7.18895053077512E-11
1961	8.64907652859395E-11
1962	1.1146224208089331E-10
1963	1.3998671649008457E-10
1964	1.8026735845814957E-10
1965	2.1854340937326256E-10
1966	2.744980890748488E-10
1967	3.5415266631573457E-10
1968	3.9054295263556094E-10
1969	4.209890174325519E-10
1970	4.4821805932491564E-10
1971	5.883806149970622E-10
1972	9.663844814669108E-10
1973	1.5997073284967266E-09
1974	2.0897047438501005E-09
1975	6.220995949175712E-09
1976	3.348903832110407E-08
1977	8.687966695412303E-08
1978	2.2707927254796896E-07
1979	5.617419920441498E-07
1980	1.09983703145184E-06
1981	2.2577054942666932E-06
1982	6.649739643056425E-06
1983	3.1929292020638463E-05
1984	0.0002270799447096361
1985	0.0016064713869222607
1986	0.0028481490536017215
1987	0.006480676022766003
1988	0.03118801645258566
1989	0.9812034261025914
1990	21.373719250269684
1991	51.4043032052253
1992	59.66599949343794
1993	57.5412362252407
1994	59.180781521561975
1995	61.053926279983486
1996	61.021948982906395
1997	60.73886014868231
1998	59.70309274271646
1999	58.60661058254318
2000	59.21452939429199
2001	58.5656756966243
2002	76.46053741127491
2003	84.48560834664316
2004	99.9999998969317
2005	110.31751108453818
2006	125.47629818381994
2007	144.22236305610542
2008	177.64036473978294
2009	204.95727717064062
2010	247.8243463954839
2011	306.56732140841643
2012	374.97745336405166
2013	464.78004777668866
2014	652.0072625716795
2015	825.3107382107311
2016	1164.6733967392504
2017	1467.5627776907404
2018	2084.433257408803
2019	3109.882268503222
2020	4356.419108701296
2021	6701.934756546176
2022	11357.851905832465
2023	26559.18582375657